Man killed in hit-and-run crash on SR-56

San Diego  A pedestrian was struck and killed Tuesday morning in a hit-and-run crash on westbound state Route 56.

A concerned motorist called authorities at 2:51 a.m. to report that a man was walking on the shoulder of the highway east of Black Mountain Road, California Highway Patrol Officer Art Athans said.

Eight minutes later, another driver called to say there was a pedestrian lying in a fetal position in the same area, Athans said.

When officers arrived, they found the man had suffered fatal injuries from the first collision and may have been hit by another vehicle that also did not stop, Athans said.

Investigators are looking for a four-door 2007 or 2008 Nissan Sentra 2.0 S or 2.0 SL of unknown color that may have been purchased or serviced at Mossy Nissan, Athans said. It may also have damage to the front end.

The victim has not yet been identified. The Medical Examiner's Office is asking for the public's help to identify him after a search of a fingerprints database was unsuccessful.

He was 5 feet 7 inches tall, 226 pounds, with short black hair and brown eyes. He had light skin, although his race could not be determined. He was wearing black or dark jeans with a black belt, black slip-on Vans canvas shoes, and a black hooded zip-up sweatshirt with thin horizontal stripes of red, white and gray. He also wore eyeglasses and carried a black iPhone.

The Black Mountain Road off-ramp and the Rancho Peñasquitos on-ramp and two westbound lanes of the highway were shut down until about 6:30 a.m. as authorities investigated.

Anyone with information on the crash is asked to call the CHP at (619) 220-5492 or the Medical Examiner's Office with information on his identity at (858) 694-2905.